hudsonbrood hudsonbrood

15-05-2017
World Languages

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How do we know that some layers of the earth are solid and some liquid

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iknowthings iknowthings

15-05-2017

Scientists mainly seismic waves to detect the forms of layers in our planet. By measuring the speed and returning times of seismic waves, scientists are able to know about the solidity and liquidity of various layers.

Hope I've helped!

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